Innate and Learned Predator Recognition Mediated by Chemical Signals in Eurycea nana
- Permanent Link:
- Innate and Learned Predator Recognition Mediated by Chemical Signals in Eurycea nana
- Series Title:
- Epp, Kristen J.
Gabor, Caitlin R.
- Publication Date:
- Effective and efficient predator recognition and avoidance are essential for the persistence of prey populations, especially in habitats where nonâ€native predators have been introduced. Predator recognition studies are commonly couched within a learned or innate dichotomous framework; however, characteristics of some systems or species could favor innate recognition combined with the ability to alter avoidance responses based on experience with predators. Eurycea nana is a fully aquatic salamander inhabiting a system with a diverse, yet temporally stable, community of native and nonâ€native opportunistically foraging fish predators. To examine predator recognition, we examined avoidance responses (decreased activity) of predatorâ€naïve (firstâ€generation, captiveâ€reared) and predatorâ€experienced (recently collected) E. nana to the chemical cues of a native predator, a nonâ€native predator, a nonâ€predator, and a blank control. Both predatorâ€naïve and predatorâ€experienced E. nana significantly lowered activity in response to the native fish predator when compared with a blank control. Interestingly, predatorâ€naïve E. nana decreased activity in response to the nonâ€native fish predator while predatorâ€experienced E. nana did not. These results indicate that while there is an innate component to predator recognition in E. nana, experience and risk assessment may also be important.
- Original Version:
- Ethology, Vol. 114, no. 6 (2008-06).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
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